#include <iostream>
using namespace std;
int main()
{
int licznik,pobrana,pom,a,b,c;
a = 0;
b = 1;
licznik = 0;
cout << "Podaj liczbe: ";
cin >> pobrana;
while(licznik != pobrana-2)
{
licznik++;
c = a+b;
pom = a;
a = b;
b = pom+b;
}
cout << "F(" << pobrana << ")=" << c;
}
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